EP 1265093 A3 20040804 - Light scanning device and image forming apparatus using the same
Title (en)
Light scanning device and image forming apparatus using the same
Title (de)
Lichtabtastvorrichtung und damit versehenes Bilderzeugungsgerät
Title (fr)
Dispositif de balayage de lumière et appareil de formation d'images l'utilisant
Publication
Application
Priority
JP 2001174433 A 20010608
Abstract (en)
[origin: EP1265093A2] It is an object of this invention to provide a light scanning device capable of suppressing a scanning line bend to a low level, which is caused by the arrangement error of a single-element lens serving as an imaging optical element, and an image forming apparatus using the device. In order to achieve the object, according to this invention, an imaging optical system is formed from a single-element lens, and a sectional shape of an exit surface in the main scanning direction is an arcuated shape. The power in the sub scanning direction substantially concentrates on the exit surface having an arcuated sectional shape in the main scanning direction, and the arcuated shape (curvature) in the main scanning direction is so determined as to make the magnification in the sub scanning direction uniform. <IMAGE>
IPC 1-7
IPC 8 full level
B41J 2/44 (2006.01); G02B 13/00 (2006.01); G02B 13/18 (2006.01); G02B 26/10 (2006.01); G02B 26/12 (2006.01); H04N 1/036 (2006.01); H04N 1/113 (2006.01)
CPC (source: EP KR US)
G02B 13/0005 (2013.01 - EP US); G02B 26/10 (2013.01 - KR); G02B 26/125 (2013.01 - EP US)
Citation (search report)
- [A] EP 0730182 A2 19960904 - CANON KK [JP]
- [A] US 5812181 A 19980922 - ISHIBE YOSHIHIRO [JP]
- [A] US 6201561 B1 20010313 - ICHIKAWA JUNICHI [JP]
- [PA] EP 1139142 A2 20011004 - CANON KK [JP]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1265093 A2 20021211; EP 1265093 A3 20040804; CN 100347585 C 20071107; CN 1391125 A 20030115; JP 2002365574 A 20021218; JP 4684470 B2 20110518; KR 100499319 B1 20050704; KR 20020093635 A 20021216; US 2003025784 A1 20030206; US 6803942 B2 20041012
DOCDB simple family (application)
EP 02253968 A 20020607; CN 02126286 A 20020607; JP 2001174433 A 20010608; KR 20020032118 A 20020608; US 15888702 A 20020603